YourbossatCertkiller.comwantsyoutoclarifyOracle10g.WhichtwostepsareperformedthefirsttimeanyUPDATEstatementisissuedaftertheinstanceisstarted？（）

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• Exhibit：YouareworkingonadatabasecreatedwiththeOracleDatabase10gsoftwareinwhichtheinitializationparameterCOMPATIBLEissetto10.0.0.Thehr_tbstablespaceinthedatabaseiscreatedasfollows：CREATETABLESPACEhr_tbsDATAFILE’/oracle/oradata/hr_tbs.dbf’SIZE50M；ViewtheExhibittoseethepropertiesofthedatabase.Whichstatementiscorrectinthisscenario？（）<img src='https://img2.soutiyun.com/ask/uploadfile/2019-03-27/dbe2887c983b369844de110d2579ff91.jpg' />

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• 预加氢系统停工时，预加氢反应温度的降温速率应控制在（)℃／h。

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